SupermediaStore.com offers the PQI Traveling Disk i261 8GB USB 2.0 Flash Drive for $28.79 with Free Shipping with Coupon Code: USB10POFF

ChiefValue.com offers the Maxtor Personal Storage 3200 500GB External USB2.0 hard drive for $91 with Free Shipping after $4 off with coupon code: CPMCFTSVA07
Also you can save : 

Seagate ST3750640AS 750GB SATA/300 7200RPM 16MB HDD - $139.95 Code: SEA750

Seagate ST3500830A 500GB UDMA/100 7200RPM 8MB IDE 3.5" HDD - $76.99 Code: ST500

CircuitCity.com offers the Western Digital 1TB Caviar GP SATA Hard Drive for $209.99 with Free Shipping
Or you can buy this Hard Drive for $200 after extra 5% off with Coupon Code: 2QAHS5HA64

J2WOutlet.com offers the Seagate Barracuda 7200.10 250GB Serial ATA 3.0Gb/s Internal Hard Drive for $58.99 with Free Shipping with Coupon Code: J2WLucky